[tw] How to get a record index of a named property from a data tiddler?

[oleghbond]

Dear All,

I've encountered an issue which I need to resolve, namely: How to get a
record index of a named property from a data tiddler?

Say, I've got the following set of records in a data tiddler:

*{"oct":31,"nov":30,"dec":31}*


As one can see the number index value of the named property, say, *"nov"* is
2.

But how can I get this number index using a macros of a plugin?

I feel that it should be somehow simply, but I've no idea how.

I would be grateful for your help.

Olegh

[BurningTreeC]

Hi @oleghbond,

say your data tiddler is called "datatiddler":

<$list filter="[[datatiddler]getindex[nov]]"> <<currentTiddler>> </$list>

gives you "30" as result

you can do it in different ways. look
at https://tiddlywiki.com/#getindex%20Operator

BurningTreeC

Post by oleghbond
Dear All,
I've encountered an issue which I need to resolve, namely: How to get a
record index of a named property from a data tiddler?
*{"oct":31,"nov":30,"dec":31}*
As one can see the number index value of the named property, say, *"nov"* is
2.
But how can I get this number index using a macros of a plugin?
I feel that it should be somehow simply, but I've no idea how.
I would be grateful for your help.
Olegh

[oleghbond]

Thank you very much,

I would like to clarify a bit the misinterpreting of my request.

What you suggest returns the value of the array under char index "nov",
which is - 30. Whereas I looked for a method for returning the number index
of the char index "nov", which is - 2, just because it is the second
element of the array.

Any idea?

Post by BurningTreeC
<$list filter="[[datatiddler]getindex[nov]]"> <<currentTiddler>> </$list>
gives you "30" as result
you can do it in different ways. look at
https://tiddlywiki.com/#getindex%20Operator
BurningTreeC

Post by oleghbond
Dear All,
I've encountered an issue which I need to resolve, namely: How to get a
record index of a named property from a data tiddler?
*{"oct":31,"nov":30,"dec":31}*
As one can see the number index value of the named property, say,
*"nov"* is 2.
But how can I get this number index using a macros of a plugin?
I feel that it should be somehow simply, but I've no idea how.
I would be grateful for your help.
Olegh

[BurningTreeC]

or easy: {{datatiddler##nov}}

[BurningTreeC]

Hi olegh, sorry I got it wrong.

That's more complex...


could this work for you?

<$set name="indexName" value="nov">

<$set name="indexes" filter="[[datatiddler]indexes[]]">
<$set name="length" filter="[enlist<indexes>] +[count[]]">
<$list filter="1 2 3 4 5 6 7 8 9 10 +[limit<length>]" variable="index">

<$list filter="[enlist<indexes>nth<index>regexp<indexName>]">

<<index>>

</$list>
</$list>
</$set>
</$set>

</$set>

[BurningTreeC]

instead of the 1 2 3 4 5.... I normally use a tiddler that holds all
integers from 1 to x in its list field and use the filter
[list[integernumberstiddler]limit<length>]] variable="index"

[BurningTreeC]

at last I think this would be better:

\define getTheIndex()
<$list filter="[enlist[$(indexes)$]nth[$(index)$]regexp[^$(indexName)$]]">

<<index>>

</$list>
\end


<$set name="indexName" value="nov">

<$set name="indexes" filter="[[datatiddler]indexes[]]">
<$set name="length" filter="[enlist<indexes>] +[count[]]">
<$list filter="1 2 3 4 5 6 7 8 9 10 +[limit<length>]" variable="index">

<<getTheIndex>>

</$list>
</$set>
</$set>

</$set>

[BurningTreeC]

... and I see I must add a reverse[] to the list: <$list filter="1 2 3 4 5
6 7 8 9 10 +[limit<length>reverse[]]" variable="index">

['Mark S.' via TiddlyWiki]

If you're just dealing with the months of the year, then the other easy
possibility is to make a second data tiddler:

*{"oct":1,"nov":2,"dec":3}*


-- Mark

Post by oleghbond
Dear All,
I've encountered an issue which I need to resolve, namely: How to get a
record index of a named property from a data tiddler?
*{"oct":31,"nov":30,"dec":31}*
As one can see the number index value of the named property, say, *"nov"* is
2.
But how can I get this number index using a macros of a plugin?
I feel that it should be somehow simply, but I've no idea how.
I would be grateful for your help.
Olegh